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[ELF][MIPS] Use MIPS R6 `sigrie` as a trap instruction 

Current value using as a trap instruction (0xefefefef) is not a good choice
for MIPS because it's a valid MIPS instruction `swc3 $15,-4113(ra)`. This
patch replaces 0xefefefef by 0x04170001. For all MIPS ISA revisions before
R6, this value is just invalid instruction. Starting from MIPS R6 it's
a valid instruction `sigrie 1` which signals a Reserved Instruction exception.

mips-traps.s test case is added to test trap encoding. Other test cases
are modified to remove redundant checking.

Differential revision: https://reviews.llvm.org/D54154

llvm-svn: 347029
This commit is contained in:
Simon Atanasyan 2018-11-16 05:30:47 +00:00
parent eabb8dd015
commit 275a5b442b
6 changed files with 83 additions and 125 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

4
lld/ELF/Arch/Mips.cpp
View File

@ -56,7 +56,9 @@ template <class ELFT> MIPS<ELFT>::MIPS() {
NoneRel = R_MIPS_NONE;
PltRel = R_MIPS_JUMP_SLOT;
NeedsThunks = true;
TrapInstr = {0xef, 0xef, 0xef, 0xef};
// Set `sigrie 1` as a trap instruction.
write32(TrapInstr.data(), 0x04170001);
if (ELFT::Is64Bits) {
RelativeRel = (R_MIPS_64 << 8) | R_MIPS_REL32;

8
lld/test/ELF/mips-got16-relocatable.s
View File

@ -14,9 +14,7 @@
# OBJ-NEXT: 00000000: R_MIPS_GOT16 .data
# OBJ-NEXT: 4: 27 24 00 00 addiu $4, $25, 0
# OBJ-NEXT: 00000004: R_MIPS_LO16 .data
# OBJ-NEXT: 8: ef ef ef ef <unknown>
# OBJ-NEXT: c: ef ef ef ef <unknown>
# OBJ-NEXT: 10: 8f 99 00 00 lw $25, 0($gp)
# OBJ: 10: 8f 99 00 00 lw $25, 0($gp)
# OBJ-NEXT: 00000010: R_MIPS_GOT16 .data
# OBJ-NEXT: 14: 27 24 00 10 addiu $4, $25, 16
# OBJ-NEXT: 00000014: R_MIPS_LO16 .data
@ -25,9 +23,7 @@
# SO-NEXT: .text:
# SO-NEXT: 10000: 8f 99 80 18 lw $25, -32744($gp)
# SO-NEXT: 10004: 27 24 00 00 addiu $4, $25, 0
# SO-NEXT: 10008: ef ef ef ef <unknown>
# SO-NEXT: 1000c: ef ef ef ef <unknown>
# SO-NEXT: 10010: 8f 99 80 18 lw $25, -32744($gp)
# SO: 10010: 8f 99 80 18 lw $25, -32744($gp)
# SO-NEXT: 10014: 27 24 00 10 addiu $4, $25, 16
.text

35
lld/test/ELF/mips-npic-call-pic-os.s
View File

@ -19,37 +19,37 @@
# CHECK-NEXT: 20004: 08 00 80 08 j 131104 <foo1a>
# CHECK-NEXT: 20008: 27 39 00 20 addiu $25, $25, 32
# CHECK-NEXT: 2000c: 00 00 00 00 nop
# CHECK: __LA25Thunk_foo1b:
# CHECK-NEXT: 20010: 3c 19 00 02 lui $25, 2
# CHECK-NEXT: 20014: 08 00 80 09 j 131108 <foo1b>
# CHECK-NEXT: 20018: 27 39 00 24 addiu $25, $25, 36
# CHECK-NEXT: 2001c: 00 00 00 00 nop
# CHECK: foo1a:
# CHECK-NEXT: 20020: 00 00 00 00 nop
# CHECK: foo1b:
# CHECK-NEXT: 20024: 00 00 00 00 nop
# CHECK: __LA25Thunk_foo2:
# CHECK-NEXT: 20028: 3c 19 00 02 lui $25, 2
# CHECK-NEXT: 2002c: 08 00 80 10 j 131136 <foo2>
# CHECK-NEXT: 20030: 27 39 00 40 addiu $25, $25, 64
# CHECK-NEXT: 20034: 00 00 00 00 nop
# CHECK-NEXT: 20038: ef ef ef ef <unknown>
# CHECK-NEXT: 2003c: ef ef ef ef <unknown>
# CHECK: foo2:
# CHECK-NEXT: 20040: 00 00 00 00 nop
# CHECK: __LA25Thunk_fpic:
# CHECK-NEXT: 20044: 3c 19 00 02 lui $25, 2
# CHECK-NEXT: 20048: 08 00 80 18 j 131168 <fpic>
# CHECK-NEXT: 2004c: 27 39 00 60 addiu $25, $25, 96
# CHECK-NEXT: 20050: 00 00 00 00 nop
# CHECK-NEXT: 20054: ef ef ef ef <unknown>
# CHECK-NEXT: 20058: ef ef ef ef <unknown>
# CHECK-NEXT: 2005c: ef ef ef ef <unknown>
# CHECK: fpic:
# CHECK-NEXT: 20060: 00 00 00 00 nop
# CHECK-NEXT: 20064: ef ef ef ef <unknown>
# CHECK-NEXT: 20068: ef ef ef ef <unknown>
# CHECK-NEXT: 2006c: ef ef ef ef <unknown>
# CHECK: fnpic:
# CHECK-NEXT: 20070: 00 00 00 00 nop
# CHECK-NEXT: Disassembly of section differentos:
@ -79,40 +79,41 @@
# REVERSE-NEXT: 20004: 08 00 80 08 j 131104 <foo1a>
# REVERSE-NEXT: 20008: 27 39 00 20 addiu $25, $25, 32
# REVERSE-NEXT: 2000c: 00 00 00 00 nop
# REVERSE: __LA25Thunk_foo1b:
# REVERSE-NEXT: 20010: 3c 19 00 02 lui $25, 2
# REVERSE-NEXT: 20014: 08 00 80 09 j 131108 <foo1b>
# REVERSE-NEXT: 20018: 27 39 00 24 addiu $25, $25, 36
# REVERSE-NEXT: 2001c: 00 00 00 00 nop
# REVERSE: foo1a:
# REVERSE-NEXT: 20020: 00 00 00 00 nop
# REVERSE: foo1b:
# REVERSE-NEXT: 20024: 00 00 00 00 nop
# REVERSE: __LA25Thunk_foo2:
# REVERSE-NEXT: 20028: 3c 19 00 02 lui $25, 2
# REVERSE-NEXT: 2002c: 08 00 80 10 j 131136 <foo2>
# REVERSE-NEXT: 20030: 27 39 00 40 addiu $25, $25, 64
# REVERSE-NEXT: 20034: 00 00 00 00 nop
# REVERSE-NEXT: 20038: ef ef ef ef <unknown>
# REVERSE-NEXT: 2003c: ef ef ef ef <unknown>
# REVERSE: foo2:
# REVERSE-NEXT: 20040: 00 00 00 00 nop
# REVERSE-NEXT: 20044: ef ef ef ef <unknown>
# REVERSE-NEXT: 20048: ef ef ef ef <unknown>
# REVERSE-NEXT: 2004c: ef ef ef ef <unknown>
# REVERSE: __LA25Thunk_fpic:
# REVERSE-NEXT: 20050: 3c 19 00 02 lui $25, 2
# REVERSE-NEXT: 20054: 08 00 80 18 j 131168 <fpic>
# REVERSE-NEXT: 20058: 27 39 00 60 addiu $25, $25, 96
# REVERSE-NEXT: 2005c: 00 00 00 00 nop
# REVERSE: fpic:
# REVERSE-NEXT: 20060: 00 00 00 00 nop
# REVERSE-NEXT: 20064: ef ef ef ef <unknown>
# REVERSE-NEXT: 20068: ef ef ef ef <unknown>
# REVERSE-NEXT: 2006c: ef ef ef ef <unknown>
# REVERSE: fnpic:
# REVERSE-NEXT: 20070: 00 00 00 00 nop
# REVERSE-NEXT: Disassembly of section differentos:
# REVERSE: Disassembly of section differentos:
# REVERSE-NEXT: __start:
# REVERSE-NEXT: 20074: 0c 00 80 00 jal 131072 <__LA25Thunk_foo1a>
# REVERSE-NEXT: 20078: 00 00 00 00 nop

114
lld/test/ELF/mips-npic-call-pic-script.s
View File

@ -19,91 +19,28 @@
# CHECK-NEXT: 20004: 08 00 80 08 j 131104 <foo1a>
# CHECK-NEXT: 20008: 27 39 00 20 addiu $25, $25, 32
# CHECK-NEXT: 2000c: 00 00 00 00 nop
# CHECK: __LA25Thunk_foo1b:
# CHECK-NEXT: 20010: 3c 19 00 02 lui $25, 2
# CHECK-NEXT: 20014: 08 00 80 09 j 131108 <foo1b>
# CHECK-NEXT: 20018: 27 39 00 24 addiu $25, $25, 36
# CHECK-NEXT: 2001c: 00 00 00 00 nop
# CHECK: foo1a:
# CHECK-NEXT: 20020: 00 00 00 00 nop
# CHECK: foo1b:
# CHECK-NEXT: 20024: 00 00 00 00 nop
# CHECK: __LA25Thunk_foo2:
# CHECK-NEXT: 20028: 3c 19 00 02 lui $25, 2
# CHECK-NEXT: 2002c: 08 00 80 10 j 131136 <foo2>
# CHECK-NEXT: 20030: 27 39 00 40 addiu $25, $25, 64
# CHECK-NEXT: 20034: 00 00 00 00 nop
# CHECK-NEXT: 20038: ef ef ef ef <unknown>
# CHECK-NEXT: 2003c: ef ef ef ef <unknown>
# CHECK: foo2:
# CHECK-NEXT: 20040: 00 00 00 00 nop
# CHECK-NEXT: 20044: ef ef ef ef <unknown>
# CHECK-NEXT: 20048: ef ef ef ef <unknown>
# CHECK-NEXT: 2004c: ef ef ef ef <unknown>
# CHECK-NEXT: 20050: ef ef ef ef <unknown>
# CHECK-NEXT: 20054: ef ef ef ef <unknown>
# CHECK-NEXT: 20058: ef ef ef ef <unknown>
# CHECK-NEXT: 2005c: ef ef ef ef <unknown>
# CHECK-NEXT: 20060: ef ef ef ef <unknown>
# CHECK-NEXT: 20064: ef ef ef ef <unknown>
# CHECK-NEXT: 20068: ef ef ef ef <unknown>
# CHECK-NEXT: 2006c: ef ef ef ef <unknown>
# CHECK-NEXT: 20070: ef ef ef ef <unknown>
# CHECK-NEXT: 20074: ef ef ef ef <unknown>
# CHECK-NEXT: 20078: ef ef ef ef <unknown>
# CHECK-NEXT: 2007c: ef ef ef ef <unknown>
# CHECK-NEXT: 20080: ef ef ef ef <unknown>
# CHECK-NEXT: 20084: ef ef ef ef <unknown>
# CHECK-NEXT: 20088: ef ef ef ef <unknown>
# CHECK-NEXT: 2008c: ef ef ef ef <unknown>
# CHECK-NEXT: 20090: ef ef ef ef <unknown>
# CHECK-NEXT: 20094: ef ef ef ef <unknown>
# CHECK-NEXT: 20098: ef ef ef ef <unknown>
# CHECK-NEXT: 2009c: ef ef ef ef <unknown>
# CHECK-NEXT: 200a0: ef ef ef ef <unknown>
# CHECK-NEXT: 200a4: ef ef ef ef <unknown>
# CHECK-NEXT: 200a8: ef ef ef ef <unknown>
# CHECK-NEXT: 200ac: ef ef ef ef <unknown>
# CHECK-NEXT: 200b0: ef ef ef ef <unknown>
# CHECK-NEXT: 200b4: ef ef ef ef <unknown>
# CHECK-NEXT: 200b8: ef ef ef ef <unknown>
# CHECK-NEXT: 200bc: ef ef ef ef <unknown>
# CHECK-NEXT: 200c0: ef ef ef ef <unknown>
# CHECK-NEXT: 200c4: ef ef ef ef <unknown>
# CHECK-NEXT: 200c8: ef ef ef ef <unknown>
# CHECK-NEXT: 200cc: ef ef ef ef <unknown>
# CHECK-NEXT: 200d0: ef ef ef ef <unknown>
# CHECK-NEXT: 200d4: ef ef ef ef <unknown>
# CHECK-NEXT: 200d8: ef ef ef ef <unknown>
# CHECK-NEXT: 200dc: ef ef ef ef <unknown>
# CHECK-NEXT: 200e0: ef ef ef ef <unknown>
# CHECK-NEXT: 200e4: ef ef ef ef <unknown>
# CHECK-NEXT: 200e8: ef ef ef ef <unknown>
# CHECK-NEXT: 200ec: ef ef ef ef <unknown>
# CHECK-NEXT: 200f0: ef ef ef ef <unknown>
# CHECK-NEXT: 200f4: ef ef ef ef <unknown>
# CHECK-NEXT: 200f8: ef ef ef ef <unknown>
# CHECK-NEXT: 200fc: ef ef ef ef <unknown>
# CHECK-NEXT: 20100: ef ef ef ef <unknown>
# CHECK-NEXT: 20104: ef ef ef ef <unknown>
# CHECK-NEXT: 20108: ef ef ef ef <unknown>
# CHECK-NEXT: 2010c: ef ef ef ef <unknown>
# CHECK-NEXT: 20110: ef ef ef ef <unknown>
# CHECK-NEXT: 20114: ef ef ef ef <unknown>
# CHECK-NEXT: 20118: ef ef ef ef <unknown>
# CHECK-NEXT: 2011c: ef ef ef ef <unknown>
# CHECK-NEXT: 20120: ef ef ef ef <unknown>
# CHECK-NEXT: 20124: ef ef ef ef <unknown>
# CHECK-NEXT: 20128: ef ef ef ef <unknown>
# CHECK-NEXT: 2012c: ef ef ef ef <unknown>
# CHECK-NEXT: 20130: ef ef ef ef <unknown>
# CHECK-NEXT: 20134: ef ef ef ef <unknown>
# CHECK-NEXT: 20138: ef ef ef ef <unknown>
# CHECK-NEXT: 2013c: ef ef ef ef <unknown>
# CHECK-NEXT: 20140: ef ef ef ef <unknown>
# CHECK-NEXT: 20144: ef ef ef ef <unknown>
# CHECK-NEXT: 20148: ef ef ef ef <unknown>
# CHECK-NEXT: 2014c: ef ef ef ef <unknown>
# CHECK: __start:
# CHECK-NEXT: 20150: 0c 00 80 00 jal 131072 <__LA25Thunk_foo1a>
# CHECK-NEXT: 20154: 00 00 00 00 nop
@ -117,16 +54,16 @@
# CHECK-NEXT: 20174: 00 00 00 00 nop
# CHECK-NEXT: 20178: 0c 00 80 68 jal 131488 <fnpic>
# CHECK-NEXT: 2017c: 00 00 00 00 nop
# CHECK: __LA25Thunk_fpic:
# CHECK-NEXT: 20180: 3c 19 00 02 lui $25, 2
# CHECK-NEXT: 20184: 08 00 80 64 j 131472 <fpic>
# CHECK-NEXT: 20188: 27 39 01 90 addiu $25, $25, 400
# CHECK-NEXT: 2018c: 00 00 00 00 nop
# CHECK: fpic:
# CHECK-NEXT: 20190: 00 00 00 00 nop
# CHECK-NEXT: 20194: ef ef ef ef <unknown>
# CHECK-NEXT: 20198: ef ef ef ef <unknown>
# CHECK-NEXT: 2019c: ef ef ef ef <unknown>
# CHECK: fnpic:
# CHECK-NEXT: 201a0: 00 00 00 00 nop
@ -145,6 +82,7 @@ __start:
# RUN: echo "SECTIONS { .text 0x20000 : { *(.text) } }" > %t2.script
# RUN: ld.lld --script %t2.script %t-npic.o %t-pic.o %t-sto-pic.o -o %t2.exe
# RUN: llvm-objdump -d %t2.exe | FileCheck -check-prefix=ORPH1 %s
# ORPH1: Disassembly of section .text:
# ORPH1-NEXT: __start:
# ORPH1-NEXT: 20000: 0c 00 80 15 jal 131156 <__LA25Thunk_foo1a>
@ -159,42 +97,43 @@ __start:
# ORPH1-NEXT: 20024: 00 00 00 00 nop
# ORPH1-NEXT: 20028: 0c 00 80 14 jal 131152 <fnpic>
# ORPH1-NEXT: 2002c: 00 00 00 00 nop
# ORPH1: __LA25Thunk_fpic:
# ORPH1-NEXT: 20030: 3c 19 00 02 lui $25, 2
# ORPH1-NEXT: 20034: 08 00 80 10 j 131136 <fpic>
# ORPH1-NEXT: 20038: 27 39 00 40 addiu $25, $25, 64
# ORPH1-NEXT: 2003c: 00 00 00 00 nop
# ORPH1: fpic:
# ORPH1-NEXT: 20040: 00 00 00 00 nop
# ORPH1-NEXT: 20044: ef ef ef ef <unknown>
# ORPH1-NEXT: 20048: ef ef ef ef <unknown>
# ORPH1-NEXT: 2004c: ef ef ef ef <unknown>
# ORPH1: fnpic:
# ORPH1-NEXT: 20050: 00 00 00 00 nop
# ORPH1: __LA25Thunk_foo1a:
# ORPH1-NEXT: 20054: 3c 19 00 02 lui $25, 2
# ORPH1-NEXT: 20058: 08 00 80 20 j 131200 <foo1a>
# ORPH1-NEXT: 2005c: 27 39 00 80 addiu $25, $25, 128
# ORPH1-NEXT: 20060: 00 00 00 00 nop
# ORPH1: __LA25Thunk_foo1b:
# ORPH1-NEXT: 20064: 3c 19 00 02 lui $25, 2
# ORPH1-NEXT: 20068: 08 00 80 21 j 131204 <foo1b>
# ORPH1-NEXT: 2006c: 27 39 00 84 addiu $25, $25, 132
# ORPH1-NEXT: 20070: 00 00 00 00 nop
# ORPH1-NEXT: 20074: ef ef ef ef <unknown>
# ORPH1-NEXT: 20078: ef ef ef ef <unknown>
# ORPH1-NEXT: 2007c: ef ef ef ef <unknown>
# ORPH1: foo1a:
# ORPH1-NEXT: 20080: 00 00 00 00 nop
# ORPH1: foo1b:
# ORPH1-NEXT: 20084: 00 00 00 00 nop
# ORPH1: __LA25Thunk_foo2:
# ORPH1-NEXT: 20088: 3c 19 00 02 lui $25, 2
# ORPH1-NEXT: 2008c: 08 00 80 28 j 131232 <foo2>
# ORPH1-NEXT: 20090: 27 39 00 a0 addiu $25, $25, 160
# ORPH1-NEXT: 20094: 00 00 00 00 nop
# ORPH1-NEXT: 20098: ef ef ef ef <unknown>
# ORPH1-NEXT: 2009c: ef ef ef ef <unknown>
# ORPH1: foo2:
# ORPH1-NEXT: 200a0: 00 00 00 00 nop
@ -203,6 +142,7 @@ __start:
# RUN: echo "SECTIONS { .out 0x20000 : { *(.text) } }" > %t3.script
# RUN: ld.lld --script %t3.script %t-npic.o %t-pic.o %t-sto-pic.o -o %t3.exe
# RUN: llvm-objdump -d %t3.exe | FileCheck -check-prefix=ORPH2 %s
# ORPH2: Disassembly of section .out:
# ORPH2-NEXT: __start:
# ORPH2-NEXT: 20000: 0c 00 80 18 jal 131168 <__LA25Thunk_foo1a>
@ -217,39 +157,43 @@ __start:
# ORPH2-NEXT: 20024: 00 00 00 00 nop
# ORPH2-NEXT: 20028: 0c 00 80 14 jal 131152 <fnpic>
# ORPH2-NEXT: 2002c: 00 00 00 00 nop
# ORPH2: __LA25Thunk_fpic:
# ORPH2-NEXT: 20030: 3c 19 00 02 lui $25, 2
# ORPH2-NEXT: 20034: 08 00 80 10 j 131136 <fpic>
# ORPH2-NEXT: 20038: 27 39 00 40 addiu $25, $25, 64
# ORPH2-NEXT: 2003c: 00 00 00 00 nop
# ORPH2: fpic:
# ORPH2-NEXT: 20040: 00 00 00 00 nop
# ORPH2-NEXT: 20044: ef ef ef ef <unknown>
# ORPH2-NEXT: 20048: ef ef ef ef <unknown>
# ORPH2-NEXT: 2004c: ef ef ef ef <unknown>
# ORPH2: fnpic:
# ORPH2-NEXT: 20050: 00 00 00 00 nop
# ORPH2-NEXT: Disassembly of section .text:
# ORPH2-NEXT: __LA25Thunk_foo1a:
# ORPH2-NEXT: 20060: 3c 19 00 02 lui $25, 2
# ORPH2-NEXT: 20064: 08 00 80 20 j 131200 <foo1a>
# ORPH2-NEXT: 20068: 27 39 00 80 addiu $25, $25, 128
# ORPH2-NEXT: 2006c: 00 00 00 00 nop
# ORPH2: __LA25Thunk_foo1b:
# ORPH2-NEXT: 20070: 3c 19 00 02 lui $25, 2
# ORPH2-NEXT: 20074: 08 00 80 21 j 131204 <foo1b>
# ORPH2-NEXT: 20078: 27 39 00 84 addiu $25, $25, 132
# ORPH2-NEXT: 2007c: 00 00 00 00 nop
# ORPH2: foo1a:
# ORPH2-NEXT: 20080: 00 00 00 00 nop
# ORPH2: foo1b:
# ORPH2-NEXT: 20084: 00 00 00 00 nop
# ORPH2: __LA25Thunk_foo2:
# ORPH2-NEXT: 20088: 3c 19 00 02 lui $25, 2
# ORPH2-NEXT: 2008c: 08 00 80 28 j 131232 <foo2>
# ORPH2-NEXT: 20090: 27 39 00 a0 addiu $25, $25, 160
# ORPH2-NEXT: 20094: 00 00 00 00 nop
# ORPH2-NEXT: 20098: ef ef ef ef <unknown>
# ORPH2-NEXT: 2009c: ef ef ef ef <unknown>
# ORPH2: foo2:
# ORPH2-NEXT: 200a0: 00 00 00 00 nop

25
lld/test/ELF/mips-npic-call-pic.s
View File

@ -51,8 +51,6 @@
# CHECK-NEXT: 2005c: 08 00 80 1c j 131184 <foo2>
# CHECK-NEXT: 20060: 27 39 00 70 addiu $25, $25, 112
# CHECK-NEXT: 20064: 00 00 00 00 nop
# CHECK-NEXT: 20068: ef ef ef ef <unknown>
# CHECK-NEXT: 2006c: ef ef ef ef <unknown>
# CHECK: foo2:
# CHECK-NEXT: 20070: 00 00 00 00 nop
@ -62,15 +60,9 @@
# CHECK-NEXT: 20078: 08 00 80 24 j 131216 <fpic>
# CHECK-NEXT: 2007c: 27 39 00 90 addiu $25, $25, 144
# CHECK-NEXT: 20080: 00 00 00 00 nop
# CHECK-NEXT: 20084: ef ef ef ef <unknown>
# CHECK-NEXT: 20088: ef ef ef ef <unknown>
# CHECK-NEXT: 2008c: ef ef ef ef <unknown>
# CHECK: fpic:
# CHECK-NEXT: 20090: 00 00 00 00 nop
# CHECK-NEXT: 20094: ef ef ef ef <unknown>
# CHECK-NEXT: 20098: ef ef ef ef <unknown>
# CHECK-NEXT: 2009c: ef ef ef ef <unknown>
# CHECK: fnpic:
# CHECK-NEXT: 200a0: 00 00 00 00 nop
@ -87,27 +79,28 @@
# REVERSE-NEXT: 20004: 08 00 80 08 j 131104 <foo1a>
# REVERSE-NEXT: 20008: 27 39 00 20 addiu $25, $25, 32
# REVERSE-NEXT: 2000c: 00 00 00 00 nop
# REVERSE: __LA25Thunk_foo1b:
# REVERSE-NEXT: 20010: 3c 19 00 02 lui $25, 2
# REVERSE-NEXT: 20014: 08 00 80 09 j 131108 <foo1b>
# REVERSE-NEXT: 20018: 27 39 00 24 addiu $25, $25, 36
# REVERSE-NEXT: 2001c: 00 00 00 00 nop
# REVERSE: foo1a:
# REVERSE-NEXT: 20020: 00 00 00 00 nop
# REVERSE: foo1b:
# REVERSE-NEXT: 20024: 00 00 00 00 nop
# REVERSE: __LA25Thunk_foo2:
# REVERSE-NEXT: 20028: 3c 19 00 02 lui $25, 2
# REVERSE-NEXT: 2002c: 08 00 80 10 j 131136 <foo2>
# REVERSE-NEXT: 20030: 27 39 00 40 addiu $25, $25, 64
# REVERSE-NEXT: 20034: 00 00 00 00 nop
# REVERSE-NEXT: 20038: ef ef ef ef <unknown>
# REVERSE-NEXT: 2003c: ef ef ef ef <unknown>
# REVERSE: foo2:
# REVERSE-NEXT: 20040: 00 00 00 00 nop
# REVERSE-NEXT: 20044: ef ef ef ef <unknown>
# REVERSE-NEXT: 20048: ef ef ef ef <unknown>
# REVERSE-NEXT: 2004c: ef ef ef ef <unknown>
# REVERSE: __start:
# REVERSE-NEXT: 20050: 0c 00 80 00 jal 131072 <__LA25Thunk_foo1a>
# REVERSE-NEXT: 20054: 00 00 00 00 nop
@ -121,16 +114,16 @@
# REVERSE-NEXT: 20074: 00 00 00 00 nop
# REVERSE-NEXT: 20078: 0c 00 80 28 jal 131232 <fnpic>
# REVERSE-NEXT: 2007c: 00 00 00 00 nop
# REVERSE: __LA25Thunk_fpic:
# REVERSE-NEXT: 20080: 3c 19 00 02 lui $25, 2
# REVERSE-NEXT: 20084: 08 00 80 24 j 131216 <fpic>
# REVERSE-NEXT: 20088: 27 39 00 90 addiu $25, $25, 144
# REVERSE-NEXT: 2008c: 00 00 00 00 nop
# REVERSE: fpic:
# REVERSE-NEXT: 20090: 00 00 00 00 nop
# REVERSE-NEXT: 20094: ef ef ef ef <unknown>
# REVERSE-NEXT: 20098: ef ef ef ef <unknown>
# REVERSE-NEXT: 2009c: ef ef ef ef <unknown>
# REVERSE: fnpic:
# REVERSE-NEXT: 200a0: 00 00 00 00 nop

22
lld/test/ELF/mips-traps.s Normal file
View File

@ -0,0 +1,22 @@
# Check trap instruction encoding.
# REQUIRES: mips
# RUN: llvm-mc -filetype=obj -triple=mips-unknown-linux -mcpu=mips32r6 -o %t.o %s
# RUN: ld.lld -r -o %t %t.o %t.o
# RUN: llvm-objdump -d -r %t | FileCheck --check-prefix=EB %s
# RUN: llvm-mc -filetype=obj -triple=mipsel-unknown-linux -mcpu=mips32r6 -o %t.o %s
# RUN: ld.lld -r -o %t %t.o %t.o
# RUN: llvm-objdump -d -r %t | FileCheck --check-prefix=EL %s
# EB: 8: 04 17 00 01 sigrie 1
# EL: 8: 01 00 17 04 sigrie 1
.text
lw $t9, %got(.data)($gp)
addiu $a0, $t9, %lo(.data)
.data
data:
.word 0